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Fusion 360 MCP Server

Fusion 360 MCP Server

Public
ArchimedesCrypto/fusion360-mcp-server

Model Context Protocol server enabling natural language-driven control of Autodesk Fusion 360 by mapping toolbar commands to API calls, generating executable Python scripts for seamless CAD automation and integration.

python
0 tools
May 29, 2025
Updated Jun 4, 2025

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Fusion 360 MCP Server

A Model Context Protocol (MCP) server that interfaces between Cline and Autodesk Fusion 360. This server exposes Fusion 360 toolbar-level commands as callable tools that map directly to Fusion's API.

๐Ÿง  Overview

This project allows Cline to:

  • Parse natural language prompts (e.g., "Make a box with rounded corners")
  • Resolve them into Fusion tool actions (e.g., CreateSketch โ†’ DrawRectangle โ†’ Extrude โ†’ Fillet)
  • Call those tools through this MCP server
  • Return Python scripts that can be executed in Fusion 360

๐Ÿ› ๏ธ Installation

Prerequisites

  • Python 3.9 or higher
  • Autodesk Fusion 360

Setup

  1. Clone this repository:

    git clone https://github.com/yourusername/fusion360-mcp-server.git cd fusion360-mcp-server
  2. Install dependencies:

    pip install -r requirements.txt

๐Ÿš€ Usage

Running the HTTP Server

cd src python main.py

This will start the FastAPI server at http://127.0.0.1:8000.

Running as an MCP Server

cd src python main.py --mcp

This will start the server in MCP mode, reading from stdin and writing to stdout.

API Endpoints

  • GET /: Check if the server is running
  • GET /tools: List all available tools
  • POST /call_tool: Call a single tool and generate a script
  • POST /call_tools: Call multiple tools in sequence and generate a script

Example API Calls

List Tools

curl -X GET http://127.0.0.1:8000/tools

Call a Single Tool

curl -X POST http://127.0.0.1:8000/call_tool \ -H "Content-Type: application/json" \ -d '{ "tool_name": "CreateSketch", "parameters": { "plane": "xy" } }'

Call Multiple Tools

curl -X POST http://127.0.0.1:8000/call_tools \ -H "Content-Type: application/json" \ -d '{ "tool_calls": [ { "tool_name": "CreateSketch", "parameters": { "plane": "xy" } }, { "tool_name": "DrawRectangle", "parameters": { "width": 10, "depth": 10 } }, { "tool_name": "Extrude", "parameters": { "height": 5 } } ] }'

๐Ÿ“ฆ Available Tools

The server currently supports the following Fusion 360 tools:

Create

  • CreateSketch: Creates a new sketch on a specified plane
  • DrawRectangle: Draws a rectangle in the active sketch
  • DrawCircle: Draws a circle in the active sketch
  • Extrude: Extrudes a profile into a 3D body
  • Revolve: Revolves a profile around an axis

Modify

  • Fillet: Adds a fillet to selected edges
  • Chamfer: Adds a chamfer to selected edges
  • Shell: Hollows out a solid body with a specified wall thickness
  • Combine: Combines two bodies using boolean operations

Export

  • ExportBody: Exports a body to a file

๐Ÿ”Œ MCP Integration

To use this server with Cline, add it to your MCP settings configuration file:

{ "mcpServers": { "fusion360": { "command": "python", "args": ["/path/to/fusion360-mcp-server/src/main.py", "--mcp"], "env": {}, "disabled": false, "autoApprove": [] } } }

๐Ÿงฉ Tool Registry

Tools are defined in src/tool_registry.json. Each tool has:

  • name: The name of the tool
  • description: What the tool does
  • parameters: The parameters the tool accepts
  • docs: Link to relevant Fusion API documentation

Example tool definition:

{ "name": "Extrude", "description": "Extrudes a profile into a 3D body.", "parameters": { "profile_index": { "type": "integer", "description": "Index of the profile to extrude.", "default": 0 }, "height": { "type": "number", "description": "Height of the extrusion in mm." }, "operation": { "type": "string", "description": "The operation type (e.g., 'new', 'join', 'cut', 'intersect').", "default": "new" } }, "docs": "https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-6D381FCD-22AB-4F08-B4BB-5D3A130189AC" }

๐Ÿ“ Script Generation

The server generates Fusion 360 Python scripts based on the tool calls. These scripts can be executed in Fusion 360's Script Editor.

Example generated script:

import adsk.core, adsk.fusion, traceback def run(context): ui = None try: app = adsk.core.Application.get() ui = app.userInterface design = app.activeProduct # Get the active component in the design component = design.rootComponent # Create a new sketch on the xy plane sketches = component.sketches xyPlane = component.xYConstructionPlane sketch = sketches.add(xyPlane) # Draw a rectangle rectangle = sketch.sketchCurves.sketchLines.addTwoPointRectangle( adsk.core.Point3D.create(0, 0, 0), adsk.core.Point3D.create(10, 10, 0) ) # Extrude the profile prof = sketch.profiles.item(0) extrudes = component.features.extrudeFeatures extInput = extrudes.createInput(prof, adsk.fusion.FeatureOperations.NewBodyFeatureOperation) distance = adsk.core.ValueInput.createByReal(5) extInput.setDistanceExtent(False, distance) extrude = extrudes.add(extInput) ui.messageBox('Operation completed successfully') except: if ui: ui.messageBox('Failed: {}'.format(traceback.format_exc()))

๐Ÿงช Extending the Server

Adding New Tools

  1. Add a new tool definition to src/tool_registry.json
  2. Add a script template to SCRIPT_TEMPLATES in src/script_generator.py
  3. Add parameter processing logic to _process_parameters in src/script_generator.py

๐Ÿ“š Documentation Links

  • Fusion 360 API Docs
  • Python API Class Reference
  • Feature API
  • Sketch API

๐Ÿ”„ Future Enhancements

  • Session state tracking for context-aware operations
  • Dynamic tool registration
  • Automation via socket or file polling
  • More Fusion commands

๐Ÿ“„ License

This project is licensed under the MIT License - see the LICENSE file for details.

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